Safety device for vehicles, particularly power driven vehicles



Janl 5, 1932. A. ADDICKS 1,839,454

SAFETY DEVICE FOR VEHICLES, PARTICULARLY POWER DRIVEN VEHICLES Filed Aug. 18, 1930 jnven+or:

lube); Flcldiclvs Patented Jan. 5, 1932 ALBERT enmcxs, or'BoITwAR-nnn, NEAR BRA Kn, GERMANY SAFETY DEVICE r03. VEHICLES, PARTICULARLY rowna'naiv'nn VEHICLES I Application filed August 1 8, 1930. Serial No. 476,074.

"This invention relates to a safety device for vehicles, particularly motor-cars, which is acted upon by a pendulum slidingor rolling weight, according to U. S. A. patent ap- 5 plication Serial No. 336,482 dated January The novelty consists in that the weight does not act directlyon the safety cage, but through the intermediary of an intermediate gear, such as a chain with sprocket wheels, a spur wheel gearing or the like, the safety cage being rigidly connected with the chassis of the vehicle and on the bars of which guide bars for racks carrying other cage bars are 5 arranged, which can be shifted vertically by a known gearing. the invention the safety cage is composed of bands of rigid material, arranged one below another like Venetian blinds, the'ends of the bands being telescopic one-in another and adapted to be lowered and raised by wire ropes connected with the weights. Moreover the lifting links of the weights are arranged adjustable on the driving wheels for the intermediate gears, and the shiftable cage bars are bent at their ends and surround the rigid cage bars. The invention also provides for the track of the weight being slightly raised towards the front in order to obtain an automatic rolling back of the sliding body'on the braking effect ceasing. Several embodiments of the invention are illustrated by way of example in the accompanying drawings in which:

Fig. I shows in side elevation the arrangement of a shiftable safety cage fitted to a motor car with an actuating mechanism shown byway of'example. I 1 r V 1 .Fig. II shows in elevation a modified-ac- 40 tuating mechanism for the safety device.

Fig. III is a partial longitudinal section through a Venetian blind extensible buffer bar. o m

IV is a partial rear view of the buffer bar shown in Fig. III.

Figs. V and VI show diagrammatically a modified form of construction'in different operating positions.

According to Fig. I the safety device consists of a'safety cage rigidly fixed on the Further, according to vehicle, for example on the chassis 1, by.

means of arms 2. The horizontal rods 3 or the like of this rigid safety cage are fastened on two rods 4, held by the holding arms 2. On these rods 4 racks 5 are slidably mounted, on which a suitable number of safety bars 6 are fastened. These bars are bent eye-like at both ends, surrounding the ends of the bars 3. The movement of the racks 5 in the guides 4 can be eifectedin any suitable manner, for example by pendulums oscillating'around pivot bolts 8, the pendulum weights9 being arranged rigidly or adjustably mounted on the arms 10.

The rotary movement of the pendulum arms 10, caused-by the inertia of the oscillatably mounted pendulum weights 9, is transpendulum mitted to the sprocket wheels 11 and 11a,

wheels 11' being rotatable on the pivot bolts '8. The pendulum arms 10 can be adjusted on the sprocket wheelsll in any suitable man'- ner,: for example by suitably constructing same and by correspondingly constructing the lower end 12 of the pendulum arm. 'The transmission of the movement of the sprocket wheels 11 to the racks 5 is effected in suitable manner for example by chains 13 through suitable transmission onto the sprocket According to Fig. II of the drawings the .7

movement of'the'adjusta'ble cage is reflected by rolling weights 16, which are arranged easily running in guides 17, fitted on'the arms of the chassis 1, employing balls 18, rollers or the like. T he guide 17 on the roller track risesslightly towards the front so that the weight 16, can easily negotiate this incline,

"when the car is brakechbut on the stopping of the car immediately run back on the track,

adjustably connected at its accordingly downwardly inclined towards the rear, and

orderv to. prevent the sliding Weight. 16 or pendulum weight 9 from changing its position on the slightest reduction of speed,a

spring 22 or other retaining device is pro-- vided, so that the safety device only becomes operative at' a certain reduction of speed.

The form of construction of the. safety cage, wherein the safety cage serves as buffer bar or is. formed by. the. louder. bar, is.- shown Figs, III. and. IV Fig. Ill shows this form. of construction in. part; top; plan. view,

andFigu IV is. a partial" front elevation This; safety device. consists; of. separate steel-.01: other bands. The. upper outer-band 23. rigidly fixed on, the car. extendsat each endinabentnortion 24, in which aplurality of: bends 25? o bands; 26, situated behind the rigi dly niou-ntedband. 23 are slidabl-y guided.

Qntthe innermostbend-25 a pull-rope orchain indicated by the. arrow QTinFi-gNIV is; fastened, which running-over apulley. 28, is con.- necte'd-with an- .oscillati=ng -sliding or rolling weight in suitable manner as above described. this weight swings towards the front,.the chain-.27 gives. way, and the. bands.- 23 descend as-shown: in Fig- IV. Any desired. number of such bands 26: may be arranged soas to cover-thecarrorthe wheels-tol-within a. short distance of the ground. The upper edges of the-bendsflasliding onewithin; another can be; supported on a. suitable. support on the lower. edge off the bend 2& or. of. the bend.- 25, which surrounds and guides it. so. that the bands- 23. in sliding. downward may, be provided .with: suitable apertures 29,. or any other suitable device, such. as racks, sprocket wheels. and. the like. may also be used. instead or the-bends 2 1,25 sliding one within. another under the'acti on of the chain 27 F igs..V and VI show a form ofconstruction iii which the catchingycage proper is formed oi aiclothband; arranged shutter-like,. which rolls=offinthe event of asuddenreduction of travellingspeedto within a. few centimeters above the ground. and: assumes a. protecting positionin. front of the. front wheels. The clbthbjand 30, fbr-which any suitablefmaterial. may be. used, is wound on an axle. 3.1 which, in the constructionsho-wn, is arranged in. the lowermost hollow buffer. bar- 32. of the, vehicle. open at the bottom.. The. cloth band is. of necessary width which depends upon that ofthe vehicle. and; is connected. at

the free. edge on. a. rodl33,.c onnected at each end with. a. one armed'lever 34,.which oscillatesaround the pivot pins 35 onthe weight 3.16.. The weight 3.6. forms the head of a lever 3.8,. oscillat'able around the axle 37;. The

swinging range of the lever 34 is limited by stops 39 and 40 on the weight 36. A segment 11 is also fastened on the axle 37 and over the arc of said segment a rope 42 or the like is laid, the free end of said rope being fastened to the front of the segment. The wire rope 12 extendsto therear part ofthe vehicle and ispthere; connected. to a rolling weight, which moves in a plane slightly inclined towards the front.

a islight' pulliexerted during the normal travel of the vehicle on the rope 4:2 the device 'is-maiiit-aihed} in the position shown in Fig. V, The axle 31 for the cloth band 30 is acted upon by a torsion spring, which winds the band on-thea-Xle 31.. Ifthe speedof thevehi'ole. is: suddenly reduced, the weight. cons necteditothe rope 42. moves. forward and. up:- ward,. owing to inertia and the weight. 36 moves downwards, as shown. in Fig. VI" so that the cloth band unrolls and assumes; a

protecting. position in. front. of. the. front wheelsof the vehicle withina few centimeters from.the ground. If. the travelling speedis again. increased, the weight. fastened on the rope. 42again= moves the parts 34L,.3.6,.38 into the. position shownin Fig..V sothat the torsion springagain winds the. cloth; band 3.0 onto.the axle 31..

ll claim.:.

1. Aisfafety device for vehicles, especially for. motor cars, comprising in combination; a pendulum. weight, a. safety. guard adapted. to be actuatediby said weight,.a: chain gear connecting said weight. with. said guard, and sprocket wheels adapted to guide. said chain.

2:. A safety device for vehicles, especially for. motor cars, comprising combination. a rolling weight, asafety guard. adapted to be actuated by said weight, a chain gear connecting said. weight with said; gnard,.. and sprocket wheels adapted to guide said chain.

A safety device. for vehicles, especially for motor. cars, comprising; in combination. a pendulum. weight, a. safety guard; adaptedto be actuated: by. said weight, and. a spur: wheel gearing. connecting said. weight with. said guard.

1. A safety device as specified in claim 1, comprising in combination. with the weight and theguard, an-.'intermediate gearingbetween-isaid weight: andisaidl'guard driving wheels for said. iflitermediate gearing, and linl'ts forsaidzweight;-adjrustable=on=said driving' wheels... p U

'5; A device-for'veh-icles especially for motor cars, comprising in combination wi'tli' the guard, an inclined plane, a rolling. weight, adapted to roll on saidpl anex on the acceleration, of the vehicle, anda rope adapted'to be pulledby saidweight and to bring-said. guard into its inoperative position; 7

6. Adeviceas specified'in claim. 6-, comprising in combination with. the. weight, a path 1 slightly rising towards the front on which said weight is adapted to roll.

7. A device as specified in claim 1, comprising in combination with the pendulum weight, a lever pendulating with said weight, an oscillatable lever on said weight, a rod on the free end of said lever, and a cloth band adapted to be moved forward to within a few centimeters of the ground by said oscillatable lever.

8. A safety device as specified in claim 1, comprising in combination with the safety guard formed by a cage rigidly connected with the chassis of the vehicle, bars of said cage, guides on said bars, racks, guided in said guides, bars carried by said racks, and gearings adapted to shift said racks vertically.

9. A device as specified in claim 1, comprising in combination rigid cage bars, shiftable cage bars, and eyes on the ends of said shiftable cage bars adapted to surround said rigid cage bars.

10. A safety device as specified in claim 1, comprising in combination with the weights and the safety guard, a plurality of bands composed of rigid material arranged shutter blind-wise one below another the ends on said bands adapted to telescope one within another, and a wire rope connecting said bands with said weights adapted to raise and lower said bands.

11. A safety device for vehicles especially for motor cars, comprising in combination a movable weight, a safety guard adapted to be actuated by said weight, and an intermediate gear adapted to transmit the movement of said weight to said guard.

In testimony whereof I afiix my signature.

ALBERT ADDIOKS. 

